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Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (5): 814.

• Articles • Previous Articles     Next Articles

Studies on Highly Selective Salicylate Electrode Based on New Complexes of Cobalt(Ⅱ) as Neutral Carriers

CHAI Ya-Qin1, LIU Yan2, YUAN Ruo1, XU Wen-Ju1, XU Lan1   

  1. 1. College of Chemistry and Chemical Engineering, Southwest China Normal University, Chongqing 400715, China;
    2. Department of Chemistry. Filling Teachers College. Chongqing 408000, China
  • Received:2002-05-30 Online:2003-05-24 Published:2003-05-24

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Abstract: In this paper, anion-selective electrode based on bis-salicylaidehydc-diaminodipropylamine cobalt (Ⅱ) metallic complex [Co(Ⅱ)-BSADDPA] as the neutral carrier is reported. The sensor exhibits a u-nique selectivity and high sensitivity toward salicylate ion, which displays an anti-Hofmeister selectivity pattern. It gives a linear response in the concentration range 3. 0× 10-6-1. 0× 10-1mol/Land a response slope of -66. 8 mV/dec in buffer solutions of pH 4. 0. The response mechanism is discussed in view of the UVspectroscopy technique. The electrode can be applied to medicine analysis and the result is in fair agreement with the result given by precipitation method.

Key words: Solvent polymeric membrane, Neutral carrier, Salicylate ion, Bis-salicylaldehyde-diamin- odipropylaminecobalt(I)

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